Interesting. That would explain why I am able to use ts-dos.mp3 on my phone, but the volume has to be all the way up. If it is a single step down it doesn't work. And someone else couldn't get it to work at all from their different phone.
Also in my case, at first I tried using a stereo-to-mono adapter so that the stereo out from the phone was joined to a mono to the m100, but that actually didn't work. I had to plug the mono plug from the m100 cable directly into the phone for it to work. I was worried about shorting the right channel to ground, but maybe the phone actually senses that and changes the behavior of the pins, just like it does for the 4th pin for a mic, which may or may not be present at any time. Most of these sound chips are software defined these days, where really any pin could do anything, so I guess it should be no surprise. That might explain why connecting without an adapter worked, but doesn't explain why the adapter didn't work. Could shorting the two channels actually lower the total signal, like slightly out of phase waves cancelling, or one silent channel draining the other active channel? -- bkw On Jul 29, 2017 7:38 AM, "Stephen Adolph" <[email protected]> wrote: > I think the problem is voltage level from common audio devices is not high > enough. Need to have at least 2vpp. Most devices put out max 1. > > On Friday, July 28, 2017, John R. Hogerhuis <[email protected]> wrote: > >> I think it would be cool. >> >> You could also do this a smart phone app. >> >> The cassette file I/o has the advantage of being integrated into the rom. >> That's why I made CloudT emulator interface with google drive and such via >> hooked cassette I/o commands. >> >> -- John. >> >
